# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-05-02 00:55:51 EDT # # ---------------------------------- WARNING ---------------------------------------- # Some of the data that you have obtained from this U.S. Geological Survey database # may not have received Director's approval. Any such data values are qualified # as provisional and are subject to revision. Provisional data are released on the # condition that neither the USGS nor the United States Government may be held liable # for any damages resulting from its use. # # More data may be available offline. # For more information on these data, contact USGS Water Data Inquiries. # This file contains the annual peak streamflow data. # # This information includes the following fields: # # agency_cd Agency Code # site_no USGS station number # peak_dt Date of peak streamflow (format YYYY-MM-DD) # peak_tm Time of peak streamflow (24 hour format, 00:00 - 23:59) # peak_va Annual peak streamflow value in cfs # peak_cd Peak Discharge-Qualification codes (see explanation below) # gage_ht Gage height for the associated peak streamflow in feet # gage_ht_cd Gage height qualification codes # year_last_pk Peak streamflow reported is the highest since this year # ag_dt Date of maximum gage-height for water year (if not concurrent with peak) # ag_tm Time of maximum gage-height for water year (if not concurrent with peak # ag_gage_ht maximum Gage height for water year in feet (if not concurrent with peak # ag_gage_ht_cd maximum Gage height code # # Sites in this file include: # USGS 01586000 NORTH BRANCH PATAPSCO RIVER AT CEDARHURST, MD # # Peak Streamflow-Qualification Codes(peak_cd): # 1 ... Discharge is a Maximum Daily Average # 2 ... Discharge is an Estimate # 3 ... Discharge affected by Dam Failure # 4 ... Discharge less than indicated value, # which is Minimum Recordable Discharge at this site # 5 ... Discharge affected to unknown degree by # Regulation or Diversion # 6 ... Discharge affected by Regulation or Diversion # 7 ... Discharge is an Historic Peak # 8 ... Discharge actually greater than indicated value # 9 ... Discharge due to Snowmelt, Hurricane, # Ice-Jam or Debris Dam breakup # A ... Year of occurrence is unknown or not exact # Bd ... Day of occurrence is unknown or not exact # Bm ... Month of occurrence is unknown or not exact # C ... All or part of the record affected by Urbanization, # Mining, Agricultural changes, Channelization, or other # F ... Peak supplied by another agency # O ... Opportunistic value not from systematic data collection # R ... Revised # # Gage height qualification codes(gage_ht_cd,ag_gage_ht_cd): # 1 ... Gage height affected by backwater # 2 ... Gage height not the maximum for the year # 3 ... Gage height at different site and(or) datum # 4 ... Gage height below minimum recordable elevation # 5 ... Gage height is an estimate # 6 ... Gage datum changed during this year # 7 ... Debris, mud, or hyper-concentrated flow # 8 ... Gage height tidally affected # Bd ... Day of occurrence is unknown or not exact # Bm ... Month of occurrence is unknown or not exact # F ... Peak supplied by another agency # R ... Revised # # agency_cd site_no peak_dt peak_tm peak_va peak_cd gage_ht gage_ht_cd year_last_pk ag_dt ag_tm ag_gage_ht ag_gage_ht_cd 5s 15s 10d 6s 8s 33s 8s 27s 4s 10d 6s 8s 27s USGS 01586000 1946-08-06 3130 8.33 USGS 01586000 1947-06-07 1550 5.63 USGS 01586000 1948-01-01 2190 6.84 2 1948-05-29 7.04 1 USGS 01586000 1949-07-12 2790 7.82 USGS 01586000 1950-03-23 1200 4.92 USGS 01586000 1951-07-04 3510 9.59 USGS 01586000 1952-09-01 2700 8.38 USGS 01586000 1952-11-21 2400 7.90 USGS 01586000 1953-12-07 1250 5.44 USGS 01586000 1955-08-13 4130 10.38 USGS 01586000 1956-07-21 3420 9.47 USGS 01586000 1956-10-23 958 4.72 USGS 01586000 1958-02-27 2100 7.37 USGS 01586000 1959-05-19 1860 6.87 USGS 01586000 1960-07-10 1240 4.83 USGS 01586000 1961-02-25 1020 4.35 USGS 01586000 1962-02-26 1660 5.65 USGS 01586000 1962-10-04 2170 6.56 USGS 01586000 1964-01-09 2280 6.75 USGS 01586000 1965-02-07 1890 6.08 USGS 01586000 1966-02-13 2150 6.54 USGS 01586000 1967-03-07 2090 6.43 USGS 01586000 1968-09-10 1360 5.72 USGS 01586000 1969-09-04 2120 7.40 USGS 01586000 1970-07-09 2710 8.41 USGS 01586000 1971-08-04 3340 9.35 USGS 01586000 1972-06-22 04:00 27800 20.75 USGS 01586000 1972-12-08 1630 6.39 USGS 01586000 1974-03-30 1200 5.32 USGS 01586000 1975-09-26 09:30 15300 16.59 USGS 01586000 1975-10-18 2230 7.00 USGS 01586000 1976-10-09 2050 6.70 USGS 01586000 1978-01-26 4540 9.24 USGS 01586000 1979-09-06 4580 9.28 USGS 01586000 1979-10-01 6870 11.27 USGS 01586000 1981-06-14 2210 6.37 USGS 01586000 1982-02-03 2350 6.57 USGS 01586000 1983-04-15 2590 6.90 USGS 01586000 1984-07-07 2260 6.43 USGS 01586000 1985-02-12 14:15 6240 10.75 USGS 01586000 1986-07-20 1230 4.87 USGS 01586000 1987-09-08 4320 9.01 USGS 01586000 1988-01-20 2100 6.20 USGS 01586000 1989-05-06 5640 10.24 USGS 01586000 1989-11-16 1740 5.67 USGS 01586000 1990-10-23 2380 6.61 USGS 01586000 1992-03-27 1350 5.08 USGS 01586000 1993-06-01 2810 7.19 USGS 01586000 1993-11-28 5440 10.07 USGS 01586000 1995-07-11 5110 9.77 USGS 01586000 1996-01-19 5740 10.33 USGS 01586000 1996-12-13 2270 6.45 USGS 01586000 1998-03-21 05:00 2010 6.07 USGS 01586000 1999-09-16 16:30 2320 6.52 USGS 01586000 2000-09-19 20:15 1860 5.83 USGS 01586000 2000-12-17 10:30 1510 5.16 USGS 01586000 2002-06-06 22:30 773 3.58 USGS 01586000 2003-09-23 09:30 3540 8.11 USGS 01586000 2003-12-11 09:00 3980 8.56 USGS 01586000 2005-07-08 12:00 3030 7.51 USGS 01586000 2006-07-06 2580 6.96 USGS 01586000 2007-03-02 07:45 2220 6.52 USGS 01586000 2008-02-01 18:30 1840 5.97 USGS 01586000 2009-08-28 09:45 2060 6.29 USGS 01586000 2009-12-09 09:30 1940 6.11 USGS 01586000 2011-09-08 04:30 5800 10.28 USGS 01586000 2011-11-23 08:00 3570 8.13 USGS 01586000 2013-01-31 03:15 5460 9.98 USGS 01586000 2013-10-11 12:15 4360 8.95 USGS 01586000 2015-09-30 3380 2 8.21 5 USGS 01586000 2016-07-30 21:15 2120 6.26 USGS 01586000 2017-05-05 13:15 1570 5.18 USGS 01586000 2018-07-26 00:24 8670 13.00 USGS 01586000 2018-11-24 21:30 2470 6.86 USGS 01586000 2019-11-01 00:52 3540 8.40 USGS 01586000 2021-06-10 21:15 1960 5.97 USGS 01586000 2021-10-29 20:45 2260 6.50